'amide-attached' originates from Modern English, specifically the combination of the noun 'amide' and the past-participial adjective 'attached', where 'amide' refers to the chemical group derived from ammonia and '-attached' means 'fastened to' or 'bonded to'.

'amide' entered scientific English in the 19th century from French/German chemical terminology (French 'amide', German 'Amid'), ultimately tied to 'ammonia' + the chemical suffix '-ide'; 'attach' comes from Old French 'atachier' (to fasten) via Late Latin/Vulgar Latin roots and developed into English 'attach' and its past participle 'attached'.

Initially, 'attached' meant 'fastened to' in a general physical sense; in chemical contexts it evolved to specifically mean 'chemically bonded to', so 'amide-attached' now denotes bonding to an amide group.